Transclival venous canal

Case contributed by Mohammad walid Ahmad Amin
Diagnosis almost certain

Presentation

Incidental findings, the patient present with a headache

Patient Data

Age: 50 years
Gender: Female
ct

A peripherally corticated (axial, sagittal) channel traverses the clivus from left to right.

Case Discussion

A transclival venous channel is a developmental variant of the clivus believed to result from incomplete fusion of the basiocciput, which leaves a bony canal that is assumed to contain communicating veins between extracranial and intracranial venous plexuses.

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